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https://issues.apache.org/jira/browse/HBASE-5521?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13233245#comment-13233245
 ] 

Hudson commented on HBASE-5521:
-------------------------------

Integrated in HBase-TRUNK-security #143 (See 
[https://builds.apache.org/job/HBase-TRUNK-security/143/])
    HBASE-5521 [jira] Move compression/decompression to an encoder specific 
encoding
context

Author: Yongqiang He

Summary:
https://issues.apache.org/jira/browse/HBASE-5521

As part of working on HBASE-5313, we want to add a new columnar encoder/decoder.
It makes sense to move compression to be part of encoder/decoder:
1) a scanner for a columnar encoded block can do lazy decompression to a
specific part of a key value object
2) avoid an extra bytes copy from encoder to hblock-writer.

If there is no encoder specified for a writer, the HBlock.Writer will use a
default compression-context to do something very similar to today's code.

Test Plan: existing unit tests verified by mbautin and tedyu. And no new test
added here since this code is just a preparation for columnar encoder. Will add
testcase later in that diff.

Reviewers: dhruba, tedyu, sc, mbautin

Reviewed By: mbautin

Differential Revision: https://reviews.facebook.net/D2097 (Revision 1302602)

     Result = FAILURE
mbautin : 
Files : 
* 
/hbase/trunk/src/main/java/org/apache/hadoop/hbase/io/encoding/BufferedDataBlockEncoder.java
* 
/hbase/trunk/src/main/java/org/apache/hadoop/hbase/io/encoding/CopyKeyDataBlockEncoder.java
* 
/hbase/trunk/src/main/java/org/apache/hadoop/hbase/io/encoding/DataBlockEncoder.java
* 
/hbase/trunk/src/main/java/org/apache/hadoop/hbase/io/encoding/DataBlockEncoding.java
* 
/hbase/trunk/src/main/java/org/apache/hadoop/hbase/io/encoding/DiffKeyDeltaEncoder.java
* 
/hbase/trunk/src/main/java/org/apache/hadoop/hbase/io/encoding/EncodedDataBlock.java
* 
/hbase/trunk/src/main/java/org/apache/hadoop/hbase/io/encoding/FastDiffDeltaEncoder.java
* 
/hbase/trunk/src/main/java/org/apache/hadoop/hbase/io/encoding/HFileBlockDecodingContext.java
* 
/hbase/trunk/src/main/java/org/apache/hadoop/hbase/io/encoding/HFileBlockDefaultDecodingContext.java
* 
/hbase/trunk/src/main/java/org/apache/hadoop/hbase/io/encoding/HFileBlockDefaultEncodingContext.java
* 
/hbase/trunk/src/main/java/org/apache/hadoop/hbase/io/encoding/HFileBlockEncodingContext.java
* 
/hbase/trunk/src/main/java/org/apache/hadoop/hbase/io/encoding/PrefixKeyDeltaEncoder.java
* /hbase/trunk/src/main/java/org/apache/hadoop/hbase/io/hfile/Compression.java
* /hbase/trunk/src/main/java/org/apache/hadoop/hbase/io/hfile/HFileBlock.java
* 
/hbase/trunk/src/main/java/org/apache/hadoop/hbase/io/hfile/HFileDataBlockEncoder.java
* 
/hbase/trunk/src/main/java/org/apache/hadoop/hbase/io/hfile/HFileDataBlockEncoderImpl.java
* /hbase/trunk/src/main/java/org/apache/hadoop/hbase/io/hfile/HFileWriterV2.java
* 
/hbase/trunk/src/main/java/org/apache/hadoop/hbase/io/hfile/NoOpDataBlockEncoder.java
* 
/hbase/trunk/src/test/java/org/apache/hadoop/hbase/io/encoding/TestDataBlockEncoders.java
* 
/hbase/trunk/src/test/java/org/apache/hadoop/hbase/io/hfile/TestHFileBlock.java
* 
/hbase/trunk/src/test/java/org/apache/hadoop/hbase/io/hfile/TestHFileBlockCompatibility.java
* 
/hbase/trunk/src/test/java/org/apache/hadoop/hbase/io/hfile/TestHFileDataBlockEncoder.java
* 
/hbase/trunk/src/test/java/org/apache/hadoop/hbase/regionserver/DataBlockEncodingTool.java

                
> Move compression/decompression to an encoder specific encoding context
> ----------------------------------------------------------------------
>
>                 Key: HBASE-5521
>                 URL: https://issues.apache.org/jira/browse/HBASE-5521
>             Project: HBase
>          Issue Type: Improvement
>            Reporter: He Yongqiang
>            Assignee: He Yongqiang
>             Fix For: 0.96.0
>
>         Attachments: 
> HBASE-5521-jira-Move-compression-decompression-to-an-2012-03-19_12_12_32.patch,
>  HBASE-5521.1.patch, HBASE-5521.D2097.1.patch, HBASE-5521.D2097.10.patch, 
> HBASE-5521.D2097.2.patch, HBASE-5521.D2097.3.patch, HBASE-5521.D2097.4.patch, 
> HBASE-5521.D2097.5.patch, HBASE-5521.D2097.6.patch, HBASE-5521.D2097.7.patch, 
> HBASE-5521.D2097.8.patch, HBASE-5521.D2097.9.patch
>
>
> As part of working on HBASE-5313, we want to add a new columnar 
> encoder/decoder. It makes sense to move compression to be part of 
> encoder/decoder:
> 1) a scanner for a columnar encoded block can do lazy decompression to a 
> specific part of a key value object
> 2) avoid an extra bytes copy from encoder to hblock-writer. 
> If there is no encoder specified for a writer, the HBlock.Writer will use a 
> default compression-context to do something very similar to today's code.

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